Poultry-house ventilator



pril .14, 1931. R. BOURKE 1,800,278

POULTRY HOUSE VENTILATOR Original Filed Aug. 16, 1927 F IE :L

u a S MW m W5 A w[ m Z- s w PB Patented Apr. 14, 11931 RUSSELL L. BO'UBKE,.0F PETAlll-UMA, CALIFORNIA POULTRY-HOUSE VENTILATOR Original application filed August 16, 1927,

' October 2-2,

The subject matter of this application has been fully disclosed in my application for Letters Patent on a ventilator, Serial Number 213,318, filed on August 16, 1927. This application is therefore a division of the application above identified.

My invention relates to devices for withdrawing from a chamber portions of the atmosphere thereof in order to insure that the atmosphere of the chamber is always of the desired quality.

An object of my invention is to utilize the naturally occurring wind for controlling the drawing of undesired atmosphere out of a chamber.

Another object of my invention is to provide a ventilator which is substantially without moving parts.

A further object of my invention is to provide a ventilator which aifords' egress of atmosphere from a chamber but which does not permit the ingress of wind, rain or snow.

A further object of my invention is to provide a ventilator which takes advantage of winds from any direction.

My invention possesses other advantageous features some ofwhich with the foregoing will be set forth at length in the following description where I shall outline in full the forms of the ventilator of my invention which I have selected for illustration in the drawings accompanying and forming part of the present specification. in said drawings 1 have shown two forms of ventilator embodying my invention, but it is to be understood that I do not limit myself to such form since the invention, as set forth in the claims may be embodied in a plurality of forms.

In the drawings:

Figure 1 is an elevation of a modified form of ventilator installed on a roof.

Figure 2 is a cross section on the line 22 f Fig. 1 of the modified form of my ventilator.

Figure 3 is an additional form of my invention shown in elevation as installed on a roof.

Figure 1 is a section of the form of ventilator of Fig. 3, the plane of section being indicated by line l-4 of Fig. 8.

In its preferred form the ventilator of my Serial No. 213,318. Divided and this application filed 1928. Serial No. 313,885.

invention preferably comprises a casing to be installed on a roof and shaped to divert the wind, the casing being provided with outlets which are shielded to prevent the ingress of rain and snow.

The ventilator of my invention has been developed for and is particularly used in conjunction with houses for chickens. It is essential for the successful raising of chickens tohav'e a well ventilated house and it is also very desirable to discharge from the chicken house not only atmosphere which is no longer fresh, but also light feathers and similar material. These ends are attained by the ventilator of my invention which I embody in a number of difierent ways. I

The ventilator forming the subject matter of this application is adapted to be installed on the peak of a roof. With this form, a roof 20 is preferably provided with an aperture 21 in the peak over which is located a casing 22. In this instance, the casingis preferably a rectangular box of sheet metal or other suitable material, and is preferably formed with an opening 23 at the top, which is rimmed by a flange 24 forming a portion of the casing 22. In order to utilize the currents of air sweeping over the roof, I have provided apertures 26 at intervals in the sides of the casing 22 and have also provided a directingbaflie 27 which serves two purposes. Not only does the baifle 27 deflect the outfiowing currents of air from the aperture 2l, as indicated by the arrows in Fig. 2, but it also serves as a shield to cover the aperture 21 and prevent the ingress of rain and snow. With this form of my ventilator, winds sweeping in any direction over the roof are effective in causing a discharge thru the aperture 21 while at the sametime the elements are prevented from entering.

The casing 22 may be made adjustable to av roof of any pitch by cutting it thru the center, pivotally securing the sectlons so formed in any suitable manner.

A further modification is adjustable for adaptation to the peaks of roofs having different pitches. This form 1 preferably construct with two sections each of which is generally similar and which together are adapted to be seated on the peak of a roof 31 and to overlie air-aperture 32 therein. Each of the sections preferably comprises a casing including end plates 33 joined by a sheet 34 which acts as a barrier for the wind sweeping up the roof and tends to direct it in a proper'inanner to cause air to be Withdrawn thru the outlet The end pieces 33 are also joined by a shield 3'? which overlies a portion of the outlet 36 and protects it against the entrance of the elements. Two of the sec tions just described are hinged together by a rod 38 inserted thru eyes formed in abutting edges. They are fastened to the roof by tacks or screws 39 and inasmuch as they are hingedly secured, they can be accommodated to a roof of any pitch. The curves in the sheet 34 are especially valuable as no matter what the direction of wind flow they act as deflectors and cause a substantial efiluX of atmosphere thru the aperture 32.

Ventilators constructed as above described produce a uniform egress of atmosphere at all times under varying weather conditions. The operation of these devices is as follows: On still days air ises normally 20 feet per minute and is discharged thru the apertures 23 (Fig. 2). When the wind is blowing and enters the jets 26 on the left hand side, an area of low pressure is created on the left side of the hood 2? and passing over the hood an area of high pressure is created on the right hand side of the hood, creating a cork or dam, on the right side of the hood which reduces the edective area of the apertures 21. As the velocity of the wind increases the pressure is reduced on one side of the hood 27 and is increased on the other, thereby automatically controlling the discharge.

In the modification shown in Figs. 3 and 4 a like condition is obtained. Wind blowing from the left is deflected upward by the curved bafile 3 1 in front of the opening 36, creating an area of high pressure which effectively stops any discharge from the left hand side. Wind passing over the hood 3'? and around the ends 33 produces an area of low pressure on the right hand side, discharging th u the aperture 36 on the right side, or vice versa.

I claim: 7

1. A ventilator for chicken houses and the like comprising a pair of hingedly secured laterally apertured sections forming a flue whose lower peripheral edges are adapted to be secured to the ridge of a roof of any pitch, said sections being provided with curved surfaces'below the apertures therein for effecting an area of low pressure adjacent said apertures.

2. A ventilator for chicken houses and the like comprising a pair of hingedly secured laterally apertured sections forming a flue whose lower peripheral edges are adapted to be snugly secured thruout their length astride the ridge of a roof of any pitch; said sections being provided with curved surfaces be low the apertures therein for effecting an area of low pressure adjacent said apertures and with baffles extending inwardly from said apertures for effecting a tortuous air path.

3. A ventilator for a chicken house or the like having an opening in the roof thereof comprising a pair of hingedly secured laterally apertured sections secured to said roof and surrounding said opening, baffles on said sections below the apertures in said sections, and a sheet longitudinally spanning said sections and overlying the opening in said roof.

In testimony whereof, I have hereunto setmy hand.

RUSSELL L. BOURKE. 

